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sys/powerpc/powerpc/mp_machdep.c
| Show First 20 Lines • Show All 294 Lines • ▼ Show 20 Lines | |||||
| SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, cpu_mp_unleash, NULL); | SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, cpu_mp_unleash, NULL); | ||||
| int | int | ||||
| powerpc_ipi_handler(void *arg) | powerpc_ipi_handler(void *arg) | ||||
| { | { | ||||
| u_int cpuid; | u_int cpuid; | ||||
| uint32_t ipimask; | uint32_t ipimask; | ||||
| int msg; | |||||
| CTR2(KTR_SMP, "%s: MSR 0x%08x", __func__, mfmsr()); | CTR2(KTR_SMP, "%s: MSR 0x%08x", __func__, mfmsr()); | ||||
| ipimask = atomic_readandclear_32(&(pcpup->pc_ipimask)); | ipimask = atomic_readandclear_32(&(pcpup->pc_ipimask)); | ||||
| if (ipimask == 0) | if (ipimask == 0) | ||||
| return (FILTER_STRAY); | return (FILTER_STRAY); | ||||
| while ((msg = ffs(ipimask) - 1) != -1) { | if (ipimask & (1 << IPI_AST)) { | ||||
| ipimask &= ~(1u << msg); | |||||
| switch (msg) { | |||||
| case IPI_AST: | |||||
| CTR1(KTR_SMP, "%s: IPI_AST", __func__); | CTR1(KTR_SMP, "%s: IPI_AST", __func__); | ||||
| break; | } | ||||
| case IPI_PREEMPT: | if (ipimask & (1 << IPI_PREEMPT)) { | ||||
| CTR1(KTR_SMP, "%s: IPI_PREEMPT", __func__); | CTR1(KTR_SMP, "%s: IPI_PREEMPT", __func__); | ||||
| sched_preempt(curthread); | sched_preempt(curthread); | ||||
| break; | } | ||||
| case IPI_RENDEZVOUS: | if (ipimask & (1 << IPI_RENDEZVOUS)) { | ||||
| CTR1(KTR_SMP, "%s: IPI_RENDEZVOUS", __func__); | CTR1(KTR_SMP, "%s: IPI_RENDEZVOUS", __func__); | ||||
| smp_rendezvous_action(); | smp_rendezvous_action(); | ||||
| break; | } | ||||
| case IPI_STOP: | if (ipimask & (1 << IPI_STOP)) { | ||||
| /* | /* | ||||
| * IPI_STOP_HARD is mapped to IPI_STOP so it is not | * IPI_STOP_HARD is mapped to IPI_STOP so it is not | ||||
| * necessary to add such case in the switch. | * necessary to add such case in the switch. | ||||
nwhitehorn: There's no switch anymore here. | |||||
| */ | */ | ||||
| CTR1(KTR_SMP, "%s: IPI_STOP or IPI_STOP_HARD (stop)", | CTR1(KTR_SMP, "%s: IPI_STOP or IPI_STOP_HARD (stop)", | ||||
| __func__); | __func__); | ||||
| cpuid = PCPU_GET(cpuid); | cpuid = PCPU_GET(cpuid); | ||||
| savectx(&stoppcbs[cpuid]); | savectx(&stoppcbs[cpuid]); | ||||
| CPU_SET_ATOMIC(cpuid, &stopped_cpus); | CPU_SET_ATOMIC(cpuid, &stopped_cpus); | ||||
| while (!CPU_ISSET(cpuid, &started_cpus)) | while (!CPU_ISSET(cpuid, &started_cpus)) | ||||
| cpu_spinwait(); | cpu_spinwait(); | ||||
| CPU_CLR_ATOMIC(cpuid, &stopped_cpus); | CPU_CLR_ATOMIC(cpuid, &stopped_cpus); | ||||
| CPU_CLR_ATOMIC(cpuid, &started_cpus); | CPU_CLR_ATOMIC(cpuid, &started_cpus); | ||||
| CTR1(KTR_SMP, "%s: IPI_STOP (restart)", __func__); | CTR1(KTR_SMP, "%s: IPI_STOP (restart)", __func__); | ||||
| break; | } | ||||
| case IPI_HARDCLOCK: | if (ipimask & (1 << IPI_HARDCLOCK)) { | ||||
| CTR1(KTR_SMP, "%s: IPI_HARDCLOCK", __func__); | CTR1(KTR_SMP, "%s: IPI_HARDCLOCK", __func__); | ||||
| hardclockintr(); | hardclockintr(); | ||||
| break; | |||||
| } | |||||
| } | } | ||||
| return (FILTER_HANDLED); | return (FILTER_HANDLED); | ||||
| } | } | ||||
| static void | static void | ||||
| ipi_send(struct pcpu *pc, int ipi) | ipi_send(struct pcpu *pc, int ipi) | ||||
| { | { | ||||
| ▲ Show 20 Lines • Show All 42 Lines • Show Last 20 Lines | |||||
There's no switch anymore here.